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Texas Instruments OPA2334AIDGSTG4
- Part No.:
- OPA2334AIDGSTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2334AIDGSTG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 10VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
OPA2334AIDGSTG4 from Texas Instruments is a dual, zero-drift CMOS operational amplifier with shutdown control, designed for precision signal conditioning in low-power, single-supply systems. It delivers 5 µV max input offset voltage, 0.05 µV/°C max drift, 285 µA per amplifier quiescent current, rail-to-rail output swing, and operates from +2.7 V to +5.5 V - ideal for battery-powered instrumentation and transducer interfaces.
For engineers reviewing the OPA2334AIDGSTG4 datasheet, OPA2334AIDGSTG4 pinout, OPA2334AIDGSTG4 application, or OPA2334AIDGSTG4 equivalent, key selection criteria include guaranteed low-drift performance over –40°C to +125°C, dual-channel shutdown capability (2 µA standby), MSOP-10 package compatibility, and verified rail-to-rail output drive into 10 kΩ loads.
Technical Context
The OPA2334AIDGSTG4 implements auto-zeroing architecture with a continuous-time 2 MHz main amplifier corrected every 100 µs, enabling near-zero long-term drift and eliminating 1/f noise without introducing significant 10 kHz correction artifacts. Its dual-channel design includes independent enable pins (pins 3 and 8) referenced to V–, supporting asynchronous channel control.
Input common-mode range extends from (V–) – 0.1 V to (V+) – 1.5 V, and output swings within 15 mV of rails at 10 kΩ load across temperature. The device is unity-gain stable and immune to phase reversal, with 110 dB minimum open-loop gain and 130 dB CMRR over –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5 µV (max) - enables sub-10 µV system-level DC accuracy without calibration in precision sensor front-ends. |
| Offset Drift | 0.05 µV/°C (max) - ensures <1 µV total drift over full –40°C to +125°C industrial range, critical for unattended measurement systems. |
| Quiescent Current | 570 µA (total, both channels) - supports ultra-low-power operation in handheld test equipment with extended battery life. |
| Supply Voltage Range | +2.7 V to +5.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V logic rails without level-shifting. |
| Gain-Bandwidth Product | 2 MHz - sufficient for 10-bit settling in <1 µs at G = 1, suitable for medium-speed data acquisition and active filtering. |
| Shutdown Current | 2 µA (per amplifier) - reduces total system standby power by >99% when channels are disabled via logic-controlled Enable pins. |
| Output Swing | Rail-to-rail (15 mV from rails @ 10 kΩ) - preserves dynamic range in low-voltage, single-supply applications like medical sensors. |
Pinout & Package
OPA2334AIDGSTG4 is housed in a 10-pin MSOP (DGS) package, 3.0 mm × 3.0 mm × 1.07 mm, with exposed thermal pad (not electrically connected). Pin 1 marked by dot; pin numbering follows standard MSOP convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive supply rail | Accepts +2.7 V to +5.5 V; requires local 0.1 µF bypass capacitor to minimize supply-induced errors. |
| 2 (Out A) | Amplifier A output | Rail-to-rail capable; high-impedance state when Enable A = low; no internal pull-up/down. |
| 3 (–In A) | Inverting input A | High-impedance CMOS node (±70 pA bias); common-mode range extends to V– – 0.1 V. |
| 4 (+In A) | Non-inverting input A | Matches –In A characteristics; thermally symmetric layout required for <0.1 µV/°C thermoelectric error. |
| 5 (Enable A) | Channel A shutdown control | CMOS input referenced to V–; valid high = >75% of V+–V–; tON = 150 µs (includes one auto-zero cycle). |
| 6 (V–) | Negative supply rail / ground reference | Reference for Enable pins and input common-mode; must be stable; connects to system ground in single-supply use. |
| 7 (+In B) | Non-inverting input B | Independent of Channel A; identical electrical specs; layout symmetry critical for matched performance. |
| 8 (Enable B) | Channel B shutdown control | Asymmetric enable timing allows staggered wake-up; enables power sequencing in multi-stage analog chains. |
| 9 (–In B) | Inverting input B | Paired with +In B; differential input capacitance = 1 pF (diff), 5 pF (common-mode). |
| 10 (Out B) | Amplifier B output | Functionally identical to Out A; supports multiplexed output buses via independent high-Z control. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero architecture | Eliminates 1/f noise and guarantees <5 µV offset + <0.05 µV/°C drift over lifetime - removes need for periodic recalibration in sealed instruments. |
| Dual independent shutdown | Two CMOS Enable inputs (pins 3 & 8) allow per-channel power gating, reducing average current in intermittent-sampling systems by >99%. |
| Rail-to-rail output stage | Swings within 15 mV of V+ and V– at 10 kΩ load across –40°C to +125°C - maximizes usable dynamic range in 3.3 V systems. |
| High CMRR & PSRR | 130 dB CMRR and ±2 µV/V PSRR ensure stable DC gain in noisy industrial environments with shared supply rails. |
| Unity-gain stability & no phase reversal | Operates stably at G = 1 with no unexpected polarity inversion - simplifies design of buffer, I/V, and sensor interface circuits. |
Applications
| Transducer Signal Conditioning | Temperature Measurement |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells, strain gauges, or pressure sensors in electronic scales and industrial weighing systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain and offset tracking; Enable pins synchronize with ADC sampling clock. Use Value: 5 µV offset and 0.05 µV/°C drift preserve 16-bit+ effective resolution across ambient temperature shifts without hardware recalibration. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in portable medical thermometers and HVAC sensors. IC Role / Device Role / Timing Role: Precision voltage follower and reference buffer; one channel conditions thermocouple output, the other buffers RTD or reference voltage. Use Value: Rail-to-rail output swing and 285 µA per channel current enable direct interface to 12-bit SAR ADCs powered from same 3.3 V rail. |
| Battery-Powered Instrumentation | Handheld Test Equipment |
Use Scenario: Front-end amplification in portable multimeters, pH meters, and environmental data loggers operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Dual op amp providing programmable gain and auto-zeroed DC coupling; shutdown mode activated between measurements. Use Value: 2 µA shutdown current per channel extends battery life to >1 year in devices measuring once per minute. |
Use Scenario: Signal buffering and level-shifting in handheld oscilloscope probes, portable spectrum analyzers, and field calibrators. IC Role / Device Role / Timing Role: High-impedance input buffer (Channel A) and active filter driver (Channel B); independent Enables support fast wake/sleep transitions. Use Value: 110 dB open-loop gain and 2 MHz GBW ensure <0.01% gain error up to 100 kHz, meeting Class II portable test equipment accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2335AIDGKR | No shutdown function; identical offset (5 µV max), drift (0.05 µV/°C), and MSOP-8 package (8-pin vs 10-pin). | Used where always-on dual amplification is required; lacks per-channel power control. | Select when board space is constrained and shutdown is unnecessary - saves 2 pins and simplifies routing. |
| AD8629ARZ | Single-supply, zero-drift dual op amp (SO-8); 1 µV max offset, 0.005 µV/°C drift, but higher 1.2 mA quiescent current. | Suitable for lab-grade bench instruments requiring ultra-low drift, not battery-constrained devices. | Choose for highest DC precision at cost of >2× current draw; verify thermal derating in compact enclosures. |
Compared with OPA2334AIDGSTG4, OPA2335AIDGKR eliminates shutdown logic to reduce size and cost while retaining core precision, whereas AD8629ARZ trades power efficiency for superior drift performance - making OPA2334AIDGSTG4 optimal for portable, low-power, high-stability applications demanding flexible power management.
Availability
OPA2334AIDGSTG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, transducer signal conditioning, and handheld test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2334AIDGSTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and signal-chain solutions.
The OPA2334AIDGSTG4 belongs to TI's Zerø-Drift Series, engineered specifically for high-accuracy, low-power, single-supply applications including medical instrumentation, industrial sensing, and portable measurement systems.
FAQ
What is the maximum operating temperature range for the OPA2334AIDGSTG4?
The OPA2334AIDGSTG4 is specified for continuous operation from –40°C to +125°C, with absolute maximum junction temperature rated at +150°C. This extended range supports deployment in automotive under-hood modules, industrial PLCs, and outdoor environmental sensors without derating.
Does the OPA2334AIDGSTG4 require external components for stable operation?
Yes - a 0.1 µF ceramic capacitor must be placed as close as possible between V+ and V– pins to suppress supply noise and prevent oscillation. Input protection resistors are recommended if signals exceed supply rails by >0.5 V, per Figure 1 in the datasheet. No compensation network is needed for unity-gain stability.
How does the shutdown feature of the OPA2334AIDGSTG4 affect output behavior?
When either Enable pin is driven low, its corresponding amplifier enters standby (2 µA IQ), and its output enters a high-impedance state - not tri-state in the digital sense, but actively disconnected from the output node. This allows safe multiplexing of multiple OPA2334AIDGSTG4 outputs onto a shared analog bus without interaction.
Can the OPA2334AIDGSTG4 drive capacitive loads directly?
The OPA2334AIDGSTG4 is not optimized for heavy capacitive loads; typical small-signal overshoot exceeds 10% for CL > 100 pF at G = +1. For loads >50 pF, an isolation resistor (e.g., 10–100 Ω) in series with the output is recommended. Figure 10 in SBOS245D provides validated RC compensation guidelines.
Is the OPA2334AIDGSTG4 pin-compatible with other devices in the OPA334/2334/335/2335 family?
No - the OPA2334AIDGSTG4 uses a 10-pin MSOP (DGS) package with dedicated Enable pins, while OPA2335 variants use 8-pin MSOP (DGK) or SO-8 packages without shutdown. Pinouts differ fundamentally; PCB redesign is required when substituting between shutdown and non-shutdown versions.
OPA2334AIDGSTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.6V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 285µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
OPA2334AIDGSTG4 FAQ
1.How can I place an order for OPA2334AIDGSTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2334AIDGSTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA2334AIDGSTG4 reliable?
The price and inventory of OPA2334AIDGSTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2334AIDGSTG4 is usually 5 days.
3.What payment methods are accepted for OPA2334AIDGSTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2334AIDGSTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2334AIDGSTG4?
OPA2334AIDGSTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2334AIDGSTG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA2334AIDGSTG4?
For technical support, including OPA2334AIDGSTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2334AIDGSTG4 requirements.
6.How does Aetrix verify that OPA2334AIDGSTG4 is sourced from the original manufacturer or authorized distributors?
All OPA2334AIDGSTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA2334AIDGSTG4 meets industry standards.
7.What is the process for return or replacement of OPA2334AIDGSTG4?
All OPA2334AIDGSTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2334AIDGSTG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA2334AIDGSTG4 part is unused and in its original packaging.
Return procedure for OPA2334AIDGSTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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